McQuay OM 897-1 Manual

Wireless Temperature Control
For McQuay “Applied” Packaged TerminalAir Conditioners and Heat Pumps and
Console Water Source Heat Pumps
Operation & Maintenance Manual OM 897-1
Group: PDAC/PDHP
Part Number: 668111002
Date: August 2009
©2009 McQuay International

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THE MANUFACTURER IS NOT RESPONSIBLE FOR
ANY RADIO OR TV INTERFERENCE CAUSED BY
UNAUTHORIZED MODIFICATIONS TO THIS
EQUIPMENT. SUCH MODIFICATIONS COULD VOID
THE USER’S AUTHORITY TO OPERATE THE
EQUIPMENT.
THIS EQUIPMENT COMPLIES WITH PART 15 OF THE
FCC RULES. OPERATION IS SUBJECT TO THE
FOLLOWING TWO CONDITIONS: (1) THIS DEVICE
MAY NOT CAUSE HARMFUL INTERFERENCE, AND
(2) THIS DEVICE MUSTACCEPTANY
INTERFERENCE RECEIVED, INCLUDING
INTERFERENCE THAT MAY CAUSE UNDESIRED
OPERATION.
THE ORIGINAL EQUIPMENT MANUFACTURER
(OEM) MUST ENSURE THAT FCC LABELING
REQUIREMENTS ARE MET. THIS INCLUDES A
CLEARLY VISIBLE LABEL ON THE OUTSIDE OF THE
FINAL PRODUCT ENCLOSURE THAT DISPLAYS THE
FOLLOWING:
CONTAINS FCC ID: TGD12400/IC: 6120A-12400

OM 897 / Page 3 of 20
Contents
Introduction..............................................................4
Batteries
Installing/Changing .............................................4
Replacing............................................................4
Mounting
Wall Mount..........................................................5
Back Stand..........................................................6
Buttons.....................................................................6
Back Light................................................................7
Setting the Clock.....................................................7
Thermostat
Programming ...................................................7-9
Navigating...........................................................9
Exiting the Program Mode ..................................9
Run Button...............................................................9
Program/Manual Operation............................9-10
Changing Temperature .........................................10
While Running a Program.................................10
Installing and Removing Nodes
Installing Nodes ...........................................10-13
Installing Multiple Nodes...................................14
Uninstalling Nodes............................................14
Thermostat Installation Reset.........................14-15
Frequently Asked Questions...........................15-17

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AA size, 1.5-volt alkaline batteries. If the batteries become
completely depleted, the heating/cooling system will go to
the “Off” state.
Figure 1. T9000 Front View
Replacing Batteries
To open the thermostat, use both hands and press the two
push-tabs on the bottom of the thermostat housing with your
thumbs while pulling the front of the thermostat away from
the base (Figure 2)
Introduction
The T9000 Wireless Temperature Control is a two-part
wireless thermostat system designed to provide precision
temperaturecontrol withoutthe installation laborand expense
ofwiring.PoweredbyAAbatteries,thethermostatcanoperate
continuouslyforapproximately18months,andcanbemounted
in any suitable location that will provide good temperature
control. A large LCD display (Figure 1) provides the user
with current room temperature, set point temperature, time,
programinterval,andothersystemstatusinformation.Inhotel
applications,programming,clocksetupbuttonsandassociated
displayinformationaretypicallynotdisplayed.Thesecondpart
oftheT9000systemiscalledaRemoteControlNodeor“RCN”.
An RCN interfaces with specic desired HVAC equipment,
and communicates with its thermostat using unlicensed 900
MHz, radio frequency energy. At the time of installation, the
T9000 thermostat is linked to one or more RCN controls. The
thermostat and RCN that have been linked will not interfere
with,orbeaffectedby,anyotherthermostatorRCNinadjacent
rooms, apartments, or neighboring homes.
Batteries
Installing/Changing
A low battery icon will light on the thermostat
display when the batteries are within approximately one week
of being exhausted. The T9000 is designed to use standard

OM 897 / Page 5 of 20
Figure 2. Opening Thermostat
The T9000 operates with either two or fourAAbatteries. Four
(4) batteries double the time between battery changes (the
averageusercanexpect1 to1.5yearsofbatterylife). Batteries
are paired, one set on top of the other (see Figure 3).
Figure 3. Battery Location
Note: Do not mix old and new batteries. When batteries are
changed, replace them all at the same time
Programmed data for heating, cooling and time of day will be
lostwhenbatteriesarecompletelyremovedordepletedandwill
haveto be re-enterendalong with resettingthe clock.To avoid
this, batteries can be replaced one set at a time before they are
depleted. However, after the rst set is replaced, immediately
replace the second set with new batteries.
Mounting
Findasuitablelocationformountingyourthermostat,preferably
an interior wall centrally located within the conditioned space
at about 5 feet above the oor. Try not to locate the thermostat
in a place where it could be exposed to heat such as a warm air
vent, or where it could be exposed to direct sunlight.
Wall-Mount
The T9000 back mounting plate provides six (6) mounting
holes. The upper and lower holes on the vertical centerline
will match up with screw positions of a standard electrical
switchbox or dry-wall mounting ring.
Step One
Removethe backplate fromthe thermostathousing (Figure2)
anduseittomarklocationsformountingholes.Whileoperation
ofthethermostatisnotaffectedbyorientation,werecommend
Base Plate
Front Cover
Latches
Circuit Board
Set A Set A
Set B Set B
Thermostat will operate on either Set A,
Set B or both. When changing, replace with all
new batteries. Never use a mix of old and new.
Battery orientation is critical.
Thermostat opened back
Thermostat will operate on
either Set A, Set B or both.
When changing, replace with
all new batteries. Never use a
mix of old and new.
Battery orientation is crtitical.
Thermostat open back

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Figure 5. General Operation Display
Note that the UP, DOWN and HEAT/COOL buttons are also
used in setting the clock and programming the thermostat,
and linking to nodes. This will be covered in the following
sections of the manual.
Four buttons located on the left side of the thermostat (refer
to Figure 1 & 12) control display of temperature in either
FahrenheitorCelsius,programming,clocksetupandcontrolof
whether the thermostat is under manual or program control.
• F / C – Toggles Fahrenheit Celsius display
• Program set up button
• Run – Sets program or manual mode of operation
• Clock set up button
using a level across the top or side of the base plate to provide
a professionally installed appearance.
Step Two
Drill 3/8" holes and insert drywall fasteners (#6 screws
recommended) and fasten the back plate to the wall.
Back Stand
Located on the back of the housing is a built-in, hinged stand
support. This feature permits the thermostat to stand on a at
surface, such as a table or shelf, in the event that a permanent
mounting to the wall is not desired.
Buttons
Four buttons are located on the front of the T9000.
Figure 4.
Thesebuttonsareusedinadjustingfanoperation,changingthe
set point temperature up or down, and changing the operating
mode of the thermostat. See Figure 1 & 12 for front view
of the thermostat and button locations. Figure 4 shows the
display items that are changed by these four buttons in normal
operation.

OM 897 / Page 7 of 20
Backlight
A single button on the right hand side of the thermostat
activatesthedisplaybacklight.Whenpressed,thebacklightwill
illuminate the display briey and turn off. If other buttons are
pressedimmediatelyafterthebacklightbutton,thedisplaywill
stayilluminateduntilafewsecondsafterallbuttonactivityhas
ended. Backlighting takes signicant energy from the batteries
and should be used sparingly. Frequent use of the backlight
function will noticeably reduce battery life.
Setting The Clock
In all setup modes, the T9000 will ash the display item you are
about to change. The UPand DOWN buttons change settings,
the HEAT/COOL button is used to move to the next item.
To set the clock, you will use the buttons marked CLOCK,
UP, DOWN, and HEAT/COOL.
Step 1
Press the CLOCK button. The hour digits will ash. Press the
UP or DOWN button to change the hour. Note that AM/PM
will change as you roll the hour past twelve. Be sure to set the
hour properly for AM or PM. Press the HEAT/COOL button
to keep the hour you’ve just set and move to minutes.
Step 2
Theminutedigitswillnowbeblinking. PresstheUPorDOWN
buttontochangetothedesiredminute.Whenthecorrectminute
is ashing press HEAT/COOL.
Step 3
Oneofthesevendayicons(Mo,Tu,We,Th,Fr,Sa,Su)willnow
ash. Press UP or DOWN until the correct day icon is ashing.
When the correct day is ashing, press HEAT/COOL.
Step 4
Press the clock button to keep all clock changes you’ve made
and resume normal operation.
Thermostat
Programming
The T9000 provides for program periods: Morning, Day,
Evening, and Night. The time and temperature can be set for
each period. Upon initial power-up the T9000 loads time and
temperature program default parameters for weekday and
weekend days. The default program perimeters conform to
Energy Star guidelines, and are a good point from which to
start.

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The default program parameters conform to Energy Star
guidelines and are a good point from which to start. Default
settings are:
Weekday Default Program Times
and Temperatures
Period Time Heat Cool
Morning 6:00 AM 70° 75°
Day 8:00 AM 62° 83°
Evening 6:00 PM 70° 75°
Night 11:00 PM 62° 78°
Weekday Default Program Times
and Temperatures
Period Time Heat Cool
Morning 8:00 AM 70° 75°
Day 10:00 AM 62° 83°
Evening 6:00 PM 70° 75°
Night 11:00 PM 62° 78°
Separate heating and cooling programs can be entered. The
mode of the thermostat is displayed in the upper right side
of the LCD screen. Figure 1 on page 4 for instance, shows
a thermostat in COOL mode. The mode the thermostat is in
when the PROGRAM button is pressed is the mode that will
be controlled by the program. If it is in the cool mode, as
shown in Figure 1, the program entered will be stored as the
program for cooling.
To program the thermostat, you will use the PROGRAM,
HEAT/COOL, UP, and DOWN buttons.
Step 1
The press the PROGRAM button to put the thermostat into
the programming mode. The display will blink all of the day
of the week icons. Pressing the UP or DOWN button will
toggle between (weekday) icons and the (weekend) icons.
Ensure the display is blinking the day you want to program.
Press HEAT/COOL.
Step 2
Nextthemorningperiodwillblink.UsetheUPorDOWNbutton
to toggle through Morning, Day, Evening, or Night, stopping
at the period you want to program. Press HEAT/COOL.
Step 3
Next, the hour of the day will blink. This is the starting hour of
the period you have selected. Use the UPor DOWN button to
change the selected hour start time. Press HEAT/COOL.

OM 897 / Page 9 of 20
Step 4
Theminuteofthedaywillblinknext.Thisisthestartingminute
inthehour. Usethe UPorDOWNbutton tochangetheminute
digits to the desired setting. (Note that the minutes change in
ve-minute increments.) Press HEAT/COOL.
Step 5
The desired set point will now be blinking. This is the
temperaturesetpointforthetimeofdayyouhaveselected.Press
the UP or DOWN button to change the set point temperature
to what you want. Press HEAT/COOL.
This completes the programming of the rst period of the
day.
Step 6
If you started with the morning time period, the next period,
day, will now be blinking. Follow steps two, three, four, and
ve for each period you wish to program.
Navigating
You can quickly step through to a specic item you want to
changebypressing theHEAT/COOLbuttonuntiltheitemyou
want to change is ashing. When that item is ashing, use the
UP or DOWN button to adjust.
Exiting Program Mode
Pressing the program button at any time will exit out of the
programming mode, save your changes to memory and return
to normal thermostat operation.
Run Button
Program / Manual Operation
The RUN button toggles the thermostat between manual
operating mode and program operating mode. When in the
program mode your thermostat responds to the times and
temperatures programmed.
Figure 6. Program Mode Display
Figure 6 shows the thermostat running in the program mode.
One of the four periods, in this case “Day”, is displayed,
letting you know which period of the day it is in. When in
the manual mode as shown in Figure 7, the period of the day
is not displayed. Instead the word “Hold” will be displayed

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above the Set point temperature, indicating the thermostat is
holding that temperature.
In manual mode, you can adjust the desired temperature using
the UP and DOWN buttons, and the thermostat will maintain
the temperature until you change it again.
Figure 7. Manual Mode Display
Changing Temperature While RunningA
Program
You can always change the temperature up or down while a
programis running. However,when the programmoves tothe
next period, the program set point temperature for that period
will take effect. For instance, assume the current program
period is Evening, with a programmed temperature of 70°,
and the next period, Night, is programmed for 65°, scheduled
to start at 11:00 PM. If during the Evening time period you
desired the space to be warmer, you could press the UPbutton
toraisethetemperaturesetpoint.Thethermostatwillholdthat
temperature until the next program period, at which point the
temperature will adjust to the programmed temperature set
point for that period. In this case the Night period is set for
11:00 PM and 65°.
Installing and Removing Nodes
AT9000thermostatandremotecontrolnodewillnotoperateas
a system until they are linked together through the installation
process. The linking process binds one or more control nodes
to a thermostat so that they will communicate with each other
as a control system. Up to eight nodes can be linked to a single
thermostat. Until linked, the control node will not operate.
Once linked, a control mode will only respond to its specic
thermostat.ThethermostatandRCNthathavebeenlinkedwill
not interfere with, or be affected by, any other thermostat or
RCNintheadjacentrooms,apartments,orneighboringhomes.
Linkinginformationisstoredinnon-volatilememory–itisnot
necessaryto Re-link the thermostat and RCN if the thermostat
batteries are removed, or after a power outage.
Installing Nodes
If multiple installation teams are installing and linking
thermostats at the same time, coordinate the activity to avoid
thepossibilityofinstallerssimultaneouslyattemptingtoperform
the linking process. Because this is an RF system, installers
in nearby rooms/areas where it is possible RF overlap could
exist, run the risk of interfering with each other.